Coffee and Lactose Additions - Process Critique

I have a 1.054 stout that will be transfered to the bottling bucket in the near future (FG 1.016) - and I would like to add coffee and lactose. I am shooting for a pronounced coffee flavor and a very creamy mouthfeel.

I have done cold steeping once with coffee, essentially like you are doing it, only I added to secondary. Should be about the same though, but don't forget some sort of sanitized filtering mechanism when you pour the coffee.